Improve CryptoUtils with wrappers for managed implementations of standard hashing...

[NovacoinLibrary.git] / Novacoin / RIPEMD160.cs

diff --git a/Novacoin/RIPEMD160.cs b/Novacoin/RIPEMD160.cs
index 28f5ebf..9d2c55f 100644 (file)
--- a/Novacoin/RIPEMD160.cs
+++ b/Novacoin/RIPEMD160.cs
@@ -1,8 +1,22 @@
-\feffusing System;
-using System.Security.Cryptography;
-using System.Collections.Generic;
-using System.Text;
-using System.Linq;
+\feff/**
+ *  Novacoin classes library
+ *  Copyright (C) 2015 Alex D. (balthazar.ad@gmail.com)
+
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as
+ *  published by the Free Software Foundation, either version 3 of the
+ *  License, or (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+using Org.BouncyCastle.Crypto.Digests;
 
 namespace Novacoin
 {
@@ -14,23 +28,24 @@ namespace Novacoin
         /// <summary>
         /// Computes RIPEMD160 hash using managed library
         /// </summary>
-        private static readonly RIPEMD160Managed _hasher160 = new RIPEMD160Managed();
-
+        // private static readonly RIPEMD160Managed _hasher160 = new RIPEMD160Managed();
+        private static RipeMD160Digest _hasher160 = new RipeMD160Digest();
+        
         // 20 bytes
         public override int hashSize
         {
-            get { return 20; }
+            get { return _hasher160.GetDigestSize(); }
         }
 
         public RIPEMD160() : base() { }
         public RIPEMD160(byte[] bytes, int offset = 0) : base(bytes, offset) { }
-        public RIPEMD160(IEnumerable<byte> bytes, int skip = 0) : base(bytes, skip) { }
         public RIPEMD160(RIPEMD160 h) : base(h) { }
 
-        public static RIPEMD160 Compute160(IEnumerable<byte> inputBytes)
+        public static RIPEMD160 Compute160(byte[] inputBytes)
         {
-            byte[] dataBytes = inputBytes.ToArray();
-            byte[] digest1 = _hasher160.ComputeHash(dataBytes, 0, dataBytes.Length);
+            var digest1 = new byte[_hasher160.GetDigestSize()];
+            _hasher160.BlockUpdate(inputBytes, 0, inputBytes.Length);
+            _hasher160.DoFinal(digest1, 0);
 
             return new RIPEMD160(digest1);
         }